525435728 has 80 divisors (see below), whose sum is σ = 1141801920. Its totient is φ = 232777728.

The previous prime is 525435721. The next prime is 525435731. The reversal of 525435728 is 827534525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525435721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1514051 + ... + 1514397.

It is an arithmetic number, because the mean of its divisors is an integer number (14272524).

Almost surely, 2^525435728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525435728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570900960).

525435728 is an abundant number, since it is smaller than the sum of its proper divisors (616366192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525435728 is a wasteful number, since it uses less digits than its factorization.

525435728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 678 counting only the distinct ones).

The product of its digits is 336000, while the sum is 41.

The square root of 525435728 is about 22922.3848671991. The cubic root of 525435728 is about 806.9374409918.

The spelling of 525435728 in words is "five hundred twenty-five million, four hundred thirty-five thousand, seven hundred twenty-eight".